Rare Plant Register for Huntingdonshire - Botanical Society of the ...

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Lythrum portula (L.) D.A. Webb Water-purslane National Status: Not scarce, not threatened County Status: Rare (3 sites, 4 tetrads) Site Grid Reference Last Record Brampton Wood SSSI TL18306994 54 TL1870 2011 (DB) 2002 (TW & HFFS) Grafham, West Wood TL153701 1997 (TW) Monks Wood SSSI TL199803 TL198805 TL196803 2008 (DB) 2009 (DB) 2009 (DB) The populations present in Brampton Wood and Monks Wood have been determined as ssp. portula. The remaining population has not yet been determined but is likely to be this subspecies also. It remains much diminished at Brampton Wood following the culverting of a ditch in 2010. Melampyrum cristatum L. Crested Cow-wheat National Status: Nationally Rare, Vulnerable, BAP County Status: Rare (2 sites, 2 tetrads) Site Grid Reference Last Record Monks Wood SSSI TL194793 2009 (DB) Stonely, Stocking Lane TL123695 2010 (BD) This summer annual species is an obligate hemiparasite of various woody and herbaceous species, predominantly found on the margins of ancient oak woods and in their clearings and rides. It occasionally grows on roadside verges and hedgebanks where these at one time bordered woodland. It is thermophilous and largely restricted to the areas of Britain with the most continental climatic regime, where it grows on calcium-rich soils derived from boulder clay (Stewart et al. 1994). Molinia caerulea (L.) Moench ssp. arundinacea (Schrank) K. Richt. Purple Moor-grass National Status: Waiting List County Status: Rare (2 sites, 5 tetrads) Site Grid Reference Last Record Holme Fen SSSI TL209889 TL197896 TL200901 Woodwalton Fen SSSI & SAC TL229836 TL228851 2009 (SL) 2009 (SL) 2008 (DB) 2010 (DB) 2010 (PS & MiB)
This is a rare but locally abundant species of our more acid fen peats. At Holme Fen, it is has declined in abundance as a result of the closing over of the birch canopy (Wells, 2003). Mycelis muralis (L.) Dumort. Wall Lettuce National Status: Not scarce, not threatened County Status: Rare (3 sites, 3 tetrads) Site Grid Reference Last Record Holme Fen SSSI, Holme Lode Covert TL20658916 2009 (DB) Huntingdon, All Saint’s Church TL239718 2011 (SS) Paxton Pits TL1862 2006 (AD) This rare species occurs in a range of conditions. At Holme Fen it is locally abundant on peat under birch trees, in Huntingdon it is a denizen of old walls while at Paxton Pits it can be found on bare gravelly substrates associated with old gravel workings. Myosotis discolor Pers. Changing Forget-me-not National Status: Not scarce, not threatened County Status: Scarce (9 sites, 11 tetrads) Site Grid Reference Last Record Brampton Wood SSSI TL183699 2008 (DB) Diddington Wood bridleway TL17356651 2008 (DB) Holme Fen SSSI TL1989 2006 (MM) Jones’s Covert, north of (CP) TL160939 2005 (NC) Meadow Lane Gravel Pits TL325703 2004 (BM) Monks Wood SSSI TL1980 (monad) 2008 (DB) Orton Pits SSSI TL1694 (tetrad) 2005 (DB) Paxton Pits TL19916255 Woodwalton Fen SSSI & SAC: Compartment 85 unspecified 55 TL19696296 TL232833 TL23388515 2009 (DB) 2010 (DB) 2008 (MM) 2008 (DB) Woodwalton Marsh SSSI TL212812 2002 (TW) All our plants appear to be ssp. dubia. An uncommon species of ancient woodland rides, old grassland and fen grassland.
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Rare Plant Register for Huntingdons
Page 4 and 5:
justification, however understandab
Page 6 and 7: The current accounts of charophyte
Page 8 and 9: 8. The Species Accounts The species
Page 10 and 11: Orton Longueville Wood (CP) TL16079
Page 12 and 13: Conington Airfield TL178870 2005 (W
Page 14 and 15: Salome Wood TL12677788 2009 (DB & L
Page 16 and 17: Calluna vulgaris (L.) Hull Heather
Page 18 and 19: Carex divulsa Stokes ssp. divulsa G
Page 20 and 21: Carex panicea L. Carnation Sedge Na
Page 22 and 23: Carex viridula Michaux ssp. brachyr
Page 24 and 25: Centaurium pulchellum (SW.) Druce L
Page 26 and 27: Norman Cross Pits: East Pit Middle
Page 28 and 29: Cruciata laevipes Opiz. Crosswort N
Page 30 and 31: Dactylorhiza incarnata ssp. incarna
Page 32 and 33: e determined whether or not a self-
Page 34 and 35: A rare but locally abundant species
Page 36 and 37: Easton, Lodge Farm TL136696 2005 (B
Page 38 and 39: Frangula alnus Mill. Alder Buckthor
Page 40 and 41: Galium uliginosum L. Fen Bedstraw N
Page 42 and 43: Gymnocarpium dryopteris (L.) Newman
Page 44 and 45: This is a free-floating species tha
Page 46 and 47: Isolepis setacea (L.) R.Br. Bristle
Page 48 and 49: This species probably persists at a
Page 50 and 51: subspecies were not distinguished b
Page 52 and 53: Lythrum portula at Monks Wood SSSI
Page 54 and 55: Primula x digenea and Primula elati
Page 58 and 59: Myosotis ramosissima Rochel Changin
Page 60 and 61: Nymphoides peltata Kuntze Fringed W
Page 62 and 63: Oenanthe silaifolia M. Bieb. Narrow
Page 64 and 65: Compartment 47 Compartment 39 62 TL
Page 66 and 67: Monks Wood, field south of TL194793
Page 68 and 69: occur on the VC31 side of the River
Page 70 and 71: natural woodlands. Where this speci
Page 72 and 73: Ranunculus sardous Crantz Hairy But
Page 74 and 75: Rubus percrispus D. Allen & R.D. Ra
Page 76 and 77: margins of rivers and lakes in mixe
Page 78 and 79: established well and has thrived. T
Page 80 and 81: Stellaria palustris Retz. Marsh Sti
Page 82 and 83: Torilis arvensis (Huds.) Link Sprea
Page 84 and 85: Utricularia vulgaris L. Greater Bla
Page 86 and 87: Veronica scutellata L. Marsh Speedw
Page 88 and 89: This species has always been rare i
Page 90 and 91: Appendix 1 Extinctions Many of the
Page 92 and 93: Wahlenbergia hederacea Ivy-leaved B
Page 94 and 95: Appendix 3 Additional Species Not Y
Page 96: Little Catworth, 9 Little Paxton, 3
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